Vacuum cleaner



FIG. 1 is a front perspective view of a vacuum cleaner showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is an enlarged top view of the vacuum cleaner; and,

FIG. 8 is an enlarged bottom view of the vacuum cleaner.

The broken lines in the drawings depict portions of the vacuum cleaner that form no part of the claimed design. 

CLAIM The ornamental design for a vacuum cleaner, as shown and described. 